<template>
    <div>
        <!-- 面包屑导航区域 -->
        <el-breadcrumb separator="/">
            <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>
        <!-- 卡片视图 -->
        <el-card>
            <!-- 添加角色 -->
            <el-row>
                <el-col>
                    <el-button type="primary" @click="addDialogVisible = true">添加角色</el-button>
                </el-col>
            </el-row>
            <!-- 角色列表区域 -->
            <el-table :data="roleList" border stripe>
                <!-- 展开列 -->
                <el-table-column type="expand">
                    <template slot-scope="scope">
                        <el-row  :class="['bdbottom',i1===0 ? 'bdtop':'','vcenter']" v-for="(item1,i1) in scope.row.children" :key="item1.id"> 
                            <!-- 渲染一级 -->
                            <el-col :span="5">
                                <el-tag closable @close="removeRightById(scope.row,item1.id)"> {{item1.authName}}</el-tag>
                                <i class="el-icon-caret-right"></i>
                            </el-col>
                            <!-- 渲染二级三级 -->
                            <el-col :span="19" >
                                <!-- 通过for循环嵌套二级权限 -->
                                <el-row :class="[i2===0 ? '':'bdtop','vcenter']" v-for="(item2 ,i2) in item1.children" :key="item2.id">
                                    <el-col :span='6'>
                                        <el-tag type="success" closable @close="removeRightById(scope.row,item2.id)"> {{item2.authName}} </el-tag>
                                        <i class="el-icon-caret-right"></i>
                                    </el-col>
                                    <el-col :span="13">
                                        <el-tag  v-for="(item3) in item2.children" :key="item3.id" type="warning" closable @close="removeRightById(scope.row,item3.id)"> {{item3.authName}}</el-tag>
                                    </el-col>
                                </el-row>
                            </el-col>
                        </el-row>
                    </template>
                </el-table-column >
                <!-- 索引列 -->
                <el-table-column type="index"></el-table-column>
                <el-table-column label="角色名称" prop="roleName"></el-table-column>
                <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
                <el-table-column label="操作" width="300px">
                    <template slot-scope="scope">
                        <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)">编辑</el-button>
                        <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeRoleById(scope.row.id)">删除</el-button>
                        <el-button type="warning" icon="el-icon-setting" size="mini" @click="showSetRightDialog(scope.row)">分配权限</el-button>

                    </template>
                </el-table-column>
            </el-table>
        </el-card>

        <!-- 分配权限对话框 -->
        <el-dialog
        title="分配权限"
        :visible.sync="setRightDiaVisible"
        width="50%" @close="setRightDialogClosed">
        <!-- 树形控件 -->
            <el-tree :data="rightslist" :props="treeProps" 
            show-checkbox node-key="id" default-expand-all 
            :default-checked-keys="defKeys" ref="treeRef"></el-tree>
            <span slot="footer" class="dialog-footer">
                <el-button @click="setRightDiaVisible = false">取 消</el-button>
                <el-button type="primary" @click="allotRights">确 定</el-button>
            </span>
        </el-dialog>
        <!-- 添加用户的对话框 -->
        <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
        <!-- 内容主体区域 -->
        <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
            <el-form-item label="角色名称" prop="roleName">
            <el-input v-model="addForm.roleName"></el-input>
            </el-form-item>
            <el-form-item label="角色描述" >
            <el-input v-model="addForm.roleDesc"></el-input>
            </el-form-item>
        </el-form>
        <!-- 底部区域 -->
        <span slot="footer" class="dialog-footer">
            <el-button @click="addDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="addRole">确 定</el-button>
        </span>
        </el-dialog> 
        <!-- 修改用户的对话框 -->
        <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
        <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
            <el-form-item label="角色名称">
            <el-input v-model="editForm.roleName"></el-input>
            </el-form-item>
            <el-form-item label="角色描述">
            <el-input v-model="editForm.roleDesc"></el-input>
            </el-form-item>
            
        </el-form>
        <span slot="footer" class="dialog-footer">
            <el-button @click="editDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="editRoleInfo">确 定</el-button>
        </span>
        </el-dialog>

    </div>
</template>
<script>
export default {
    data() {
        return {
            //所有角色列表
            roleList:[],
            //控制分配权限对话框的
            setRightDiaVisible:false,
            //所有权限的数据
            rightslist:[],
            //树形
            treeProps:{
                label:'authName',
                children:'children'
            },
            //默认选中的节点
            defKeys:[],
            //当前即将
            roleId:'',
            addForm:{
                roleName:'',
                roleDesc:''
            },
            // 控制修改用户对话框的显示与隐藏
            editDialogVisible: false,
            // 查询到的用户信息对象
            editForm: {},
            // 控制添加用户对话框的显示与隐藏
            addDialogVisible: false,
            addFormRules:{
                roleName: [
                    { required: true, message: '请输入角色名称', trigger: 'blur' },
                    {
                        min: 3,
                        max: 20,
                        message: '角色名称的长度在3~20个字符之间',
                        trigger: 'blur'
                    }
                    ],
            },
            editFormRules:{
                roleName: [
                    { required: true, message: '请输入角色名称', trigger: 'blur' },
                    {
                        min: 3,
                        max: 20,
                        message: '角色名称的长度在3~20个字符之间',
                        trigger: 'blur'
                    }
                    ],
            }
        }
    },
    created(){
        this.getRolesList()
    },
    methods:{
       async getRolesList(){
            const {data:res}= await this.$http.get('roles')
            if (res.meta.status!=200) {
                return this.$message.error(res.meta.msg)
            }
            this.roleList=res.data
            //console.log(this.roleList);

        },
        async removeRightById(role,rightId){
            //弹框提示用户是否删除
            const confirmResult=await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
            confirmButtonText: '确定',
            cancelButtonText: '取消',
            type: 'warning'
            }).catch(err=>err)
            if(confirmResult!=='confirm'){
                return this.$message.info('取消删除')
            }
            const {data:res}=await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
            if(res.meta.status!=200) {
                return this.$message.error('删除角色权限失败')
            }
            role.children=res.data

        },
        //展示分配权限对话框
        async showSetRightDialog(role){
            this.roleId=role.id
            const {data:res} = await this.$http.get('rights/tree')
            if(res.meta.status!=200){
                return this.$message.error('获取权限数据失败！')
            }
            this.rightslist=res.data
            //console.log(this.rightslist);
            this.getLeafKeys(role,this.defKeys)
            this.setRightDiaVisible=true

        },
        //获取id
        getLeafKeys(node,arr){
            if(!node.children){
                return arr.push(node.id)
            }
            node.children.forEach(item=>
            this.getLeafKeys(item,arr))
        },
        //监听分配权限对话框的关闭事件
        setRightDialogClosed(){
            this.defKeys=[]

        },
        //
        async allotRights(){
            const keys=[
                ...this.$refs.treeRef.getCheckedKeys(),
                ...this.$refs.treeRef.getHalfCheckedKeys()
            ]
            const idStr=keys.join(',')
            console.log(idStr);
            const {data:res} = await this.$http.post(`roles/${this.roleId}/rights?rids=${idStr}`)
            console.log(idStr);
            if(res.meta.status!==200){
                this.$message.error('分配权限失败！')
            }
            this.$message.success('分配权限成功')
            this.getRolesList()
            this.setRightDiaVisible=false

        },
        // 监听添加用户对话框的关闭事件
        addDialogClosed() {
        this.$refs.addFormRef.resetFields()
        },
        addRole(){
            this.$refs.addFormRef.validate(async valid=>{
                const {data:res}= await this.$http.post('roles',this.addForm)
                if(res.meta.status!=201){
                    this.$message.error('添加角色失败！')
                }
                this.$message.success('添加角色成功')
                this.addDialogVisible=false
                this.getRolesList()
            })
        },
        async showEditDialog(id){
            const{data:res}=await this.$http.get('roles/'+id)
            if(res.meta.status!=200){
                return this.$message.error('查询角色失败！')
            }
            this.editForm=res.data
            this.editDialogVisible=true

        },
        // 监听修改用户对话框的关闭事件
        editDialogClosed() {
            this.$refs.editFormRef.resetFields()
        },
        editRoleInfo(){
            this.$refs.editFormRef.validate(async valid=>{
                if(!valid) return
                const {data:res}=await this.$http.put(
                    'roles/'+this.editForm.id,this.editForm
                )
                this.editDialogVisible=false
                this.getRolesList()
                this.$message.success('更新角色成功')
            })
        },
        // 根据Id删除对应的用户信息
    async removeRoleById(id) {
      // 弹框询问用户是否删除数据
      const confirmResult = await this.$confirm(
        '此操作将永久删除该用户, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)

      // 如果用户确认删除，则返回值为字符串 confirm
      // 如果用户取消了删除，则返回值为字符串 cancel
      // console.log(confirmResult)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }

      const { data: res } = await this.$http.delete('roles/' + id)

      if (res.meta.status !== 200) {
        return this.$message.error('删除用户失败！')
      }

      this.$message.success('删除用户成功！')
      this.getRolesList()
    },
    }
    
    
}
</script>
<style lang="less" scoped>
.el-tag{
    margin: 7px;
}
.bdtop{
    border-top: 1px solid #eee;
}
.bdbottom{
    border-bottom: 1px solid #eee;

}
.vcenter{
    display: flex;
    align-items: center;
}
</style>